Technical data sheet for an 8.00' static deflection spring, B.111, for the latest frame.
| Identifier | ExFiles\Box 100\1\ scan0133 | |
| Date | 3rd May 1938 | |
| Da {Bernard Day - Chassis Design} /DB. {Donald Bastow - Suspensions} 1/G.3.5.38. 8.00"STATIC DEFLECTION SPRING - B.111. LATEST FRAME, 800 LBS. SPRUNG WEIGHT PER WHEEL. Wire Diameter: 0.624" Mean Diameter of Coils: 4.876 No. of Effective Coils: 6¼ Normal Load: 1380 lbs. Normal Deflection: 4.588" Maximum Load: 1848 lbs. Maximum Deflection: 6.150" Maximum Stress - Uncorrected: 94,600 lbs/sq.in. Maximum Stress - Corrected: 112,000 lbs/sq.in. Rate: 300 lbs/in. Rate at Wheel: 100.8 lbs/in. Room for Packing - 0.45" Corresponds to 0.775" at wheel. | ||
From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).